**Core Concept**
Cardiotoxic drugs are substances that can cause damage to the heart muscle, leading to various cardiac complications such as arrhythmias, heart failure, and even death. These drugs can affect the heart through different mechanisms, including direct myocardial damage, electrophysiological disturbances, or vascular effects.

**Why the Correct Answer is Right**
The mechanism of cardiotoxicity varies among different drugs. Some drugs directly damage the heart muscle, while others affect the heart's electrical activity or vascular function. For example, certain antibiotics like doxorubicin and daunorubicin are known to cause direct myocardial damage, leading to cardiotoxicity.

**Why Each Wrong Option is Incorrect**
* **Option A:** Doxorubicin is a well-known cardiotoxic drug, so this option is incorrect.
* **Option B:** Anthracyclines, including doxorubicin, are commonly associated with cardiotoxicity, making this option incorrect.
* **Option D:** Cisplatin is also known to cause cardiotoxicity, particularly through its effects on the vascular endothelium.

**Clinical Pearl / High-Yield Fact**
It's essential to note that cardiotoxicity can be dose-dependent and cumulative, so monitoring patients receiving cardiotoxic drugs is crucial to prevent long-term cardiac damage.

**Correct Answer: A. None of the above**